Sien De la Mar-Kloppers was born on March 5, 1881 in Amsterdam, Noord-Holland, Netherlands. She was an actress, known for Toffe jongens onder de mobilisatie (deel 1) (1914), The Cross-Patch (1935) and Oranje Hein (1936). She was married to Nap de la Mar. She died on July 10, 1944 in Amsterdam.